html,body{ margin:0px; height:100%; background-color: #ffffff;font-family: "Microsoft yahei";}
.headerStyle{background-color: blue; width:100%;height:10%;}
.header_nav{color:blue;}
.currentTime{text-align: center;margin-top: 3%;}
.mui-title{color: #FFFFFF; font-size: 1.4rem;}
.dateShow{font-size:1.5rem;margin-bottom:3%;}
